Local thermal conductivity of inhomogeneous nano-fluidic films:A density functional theory perspective

Combining the mean field Pozhar-Gubbins(PG)theory and the weighted density approximation,a novel method for local thermal conductivity of inhomogeneous fluids is proposed.The correlation effect that is beyond the mean field treatment is taken into account by the simulation-based empirical correlations.The application of this method to confined argon in slit pore shows that its prediction agrees well with the simulation results,and that it performs better than the original PG theory as well as the local averaged density model(LADM).In its further application to the nano-fluidic films,the influences of fluid parameters and pore parameters on the thermal conductivity are calculated and investigated.It is found that both the local thermal conductivity and the overall thermal conductivity can be significantly modulated by these parameters.Specifically,in the supercritical states,the thermal conductivity of the confined fluid shows positive correlation to the bulk density as well as the temperature.However,when the bulk density is small,the thermal conductivity exhibits a decrease-increase transition as the temperature is increased.This is also the case in which the temperature is low.In fact,the decrease-increase transition in both the small-bulk-density and low-temperature cases arises from the capillary condensation in the pore.Furthermore,smaller pore width and/or stronger adsorption potential can raise the critical temperature for condensation,and then are beneficial to the enhancement of the thermal conductivity.These modulation behaviors of the local thermal conductivity lead immediately to the significant difference of the overall thermal conductivity in different phase regions.

We Should Well Grasp Those Vital Issues Related to the Future Trend of International Relations

Profound changes in the international situation this past year signify how momentous and rapid are the alterations in the international power configuration,the geopolitical landscape,and the global governance structure.Since the financial crisis,the developed economies have fallen into recession and,in general,their recovery remains slow.Emerging economies have high growth,by contrast,and this is a factor in accelerating multi-polarization in the international power configuration.This evolution is complicated,but the trend is seeing a strong China,now the world's second-largest economy having posted a 7.4%2014 growth rate,shortening its gap with the U.S.and gradually pulling ahead of

A Review of China's Surrounding Security Environment in the Context of the International Political Economy

Since the second half of 2012,the security situation in China’s surrounding areas has become increasingly serious.On the sea frontiers,following the Sino-Philippine conflict over Huangyan Island,the Sino-Japanese dispute over the Diaoyu Islands has escalated due to the Japanese government’s illegal"purchase"of the islands.Since 2013,Japan has also continuously enhanced its military coordination with

Building Symbiotic Mechanisms between International Relations Think Tanks and Colleges

Now is the golden opportunity for Chinese think tanks to leapfrog in their development.China’s rise and its growing international role,spurred by initiatives such as the'Going Out'and'One Belt One Road'policies have given international studies think tanks

The Impact of the China-U.S.Game on the Future Configuration of International Security

In 2014,the China-U.S.game intensified less than during previous years,but the situation has not yet fundamentally improved.Since the end of the Cold War,there have been several security crises between China and the United States,such as the'the Taiwan Strait crisis'in 1995-1996,the'U.S.bombing of Chinese Embassy'in 1999,and the'air collision incident'in 2001,but China has successfully navigated all these crises.However,the most recent round in the Sino-U.S.game,which started in2010,is different from previous ones,because it derives from the closer security strengths of the two countries and by objective changes in

The Governance of the Chaotic International Security

After the Cold War ended, former traditional security threats withered while non-traditional ones sprouted. More recently as both traditional and non-traditional security threats bloom, concern spreads over whether international security governance can be effective. Worse still, major Western countries' zeal for global governance has cooled,while they turn from being advocates of global governance to obstacles,making the future dimmer.

Japan’s Political Development in the Later Period of the Abe Administration and the Sino-Japanese Relationship

With Shinzo Abe's re-election as the president of Japan's Liberal Democratic Party (LDP), the LDP regime appears to have entered on a stable trend of long-term governance. This also marks a later phase of the Abe administration has solidified its later phase, following Abe's second rise to power. The supremacy of the LDP and the administration of the basket of economic policies termed Abenomics have produced initial effects, and the overall climate of political opinion in Japan remains largely conservative, all factors favorable the continuance of Abe's regime. A major task in the future to cement AbeJ s political legacy would be amendment of Japan’ s pacifist constitution. Abe’ s political and security policies are likely not to change, namely, the promotion of multilateral cooperation in the US-Japan alliance, a moderate adjustment of Japan's China policy, and a return to utilitarian diplomacy to maximize Japan’s national interests. Thanks to the return of the Sino-Japanese relationship to the right track, the healthy development of bilateral relations depends on the consolidation of the political foundation, deepening mutually beneficial cooperation, and constructively managing and controlling disagreement.

Confinement-induced modulation of elastic properties of nano-confined fluids in slit pore

Based on statistical mechanics for classical fluids, the general expressions for the elastic moduli of inhomogeneous fluid are derived and expressed as functionals of density functions. Within the framework of classical density functional theory, the bulk modulus of confined argon in slit pore is calculated under different conditions. The effects of vapor pressure, temperature, and pore width on modulus are calculated and investigated. Obvious confinement-induced effect has been observed in the confined argon. In addition, the solvation pressure dependence of the bulk modulus is also investigated,and the results suggest that the Tait–Murnaghan equation is still valid for the confined fluids.

Exploiting structural similarity of log files in fault diagnosis for Web service composition

With increasing deployment of Web services, the research on the dependability and availability of Web service composition becomes more and more active. Since unexpected faults of Web service composition may occur in different levels at runtime, log analysis as a typical data- driven approach for fault diagnosis is more applicable and scalable in various architectures. Considering the trend that more and more service logs are represented using XML or JSON format which has good flexibility and interoperability, fault classification problem of semi-structured logs is considered as a challenging issue in this area. However, most existing approaches focus on the log content analysis but ignore the structural information and lead to poor performance. To improve the accuracy of fault classification, we exploit structural similarity of log files and propose a similarity based Bayesian learning approach for semi-structured logs in this paper. Our solution estimates degrees of similarity among structural elements from heterogeneous log data, constructs combined Bayesian network （CBN）, uses similarity based learning algorithm to compute probabilities in CBN, and classifies test log data into most probable fault categories based on the generated CBN. Experimental results show that our approach outperforms other learning approaches on structural log datasets.

Species separation of binary colloidal mixtures in the multi-Gauss potential: Effect of depletion

For the asymmetrical colloidal mixture subject to a confining potential and an external multi-Gauss potential, the separation of species is studied based on the classical density functional theory of simple fluids. The multi-Gauss potential consists of several Gauss barriers, which are distributed along the axial direction with uniform distance. The barrier width,barrier distance, and barrier height are individually adjusted to investigate their effects on the species separation. From the numerical results, it is concluded that in each condition, the competition between the external potential and the depletion potential determines the phase equilibrium and the separation. Species separation appears only in the region where the depletion is dominant. On the contrary, both species are absent in the regions where the external potential takes the absolute advantage.

Density functional study of the pressure tensor for inhomogeneous Lennard-Jones fluids

Based on classical density functional theory, an expression of the pressure tensor for inhomogeneous fluids is presented. This takes into account greater correlation between particles, especially for systems that are geometrically confined or involve an interface. The density and pressure components of Lennard-Jones fluids confined in hard and softened nano-cavities are calculated. A comparison between the results of this work and IK expression suggests that the agreement depends on temperature. The interracial tension for hard sphere fluids agrees well with the Monte Carlo result when the bulk density is not too large. The results of the solid fluid interracial tension for Lennard-Jones fluids demonstrate that different types of external potentials modulate the interfacial tension in different manners.

Density functional study on the pressure profile of the inhomogeneous fluid mixture

By using the statistical mechanics, the pressure tensor for the multi component fluid mixture is derived. With the help of the classical density functional theory, profiles of the pressure components are calculated, and the influence of the total volume fraction, ratio of volume fraction, and size asymmetry on the pressure are studied. In addition, our results show that for the mixture confined in the hard cavity, the pressure shows a discontinuity near the cavity wall. However, in the soft cavity condition, the discontinuity disappears.

Why China First Advocates Creating a Community of a Shared Future for Humanity in the 21st Century

Since the 18th CPC National Congress,the Central Committee with Xi Jinping at its core has elaborated on the creation of a community of shared future for mankind.Realizing long-term peace,harmony,prosperity and development in a comprehensive,systematic and profound way is the goal for the new century.This concept was addressed,post-Cold War,by Chinese leaders Jiang Zemin and Hu Jintao.Reasons why socialist

Challenges to the International Nuclear Order

The appearance of nuclear weapons has posed unprecedented threats of war to mankind. With joint efforts of the international community, a series of international norms and arrangements have been gradually established, mainly involving nuclear disarmament and nuclear arms control, prohibition of the use of nuclear weapons, as well as non-proliferation of nuclear arms, effectively influencing nuclear activities among sovereign states, warding off the outbreak of nuclear war, and limiting the number of nuclear states. Since the beginning of the 21 st century, the international strategic environment has undergone major changes. Mankind has entered a new age when nuclear and missile technologies have been proliferated in an accelerated way, with Iran's nuclear capability steadily growing, the DPRK obtaining nuclear weapons by successfully breaching the international nuclear non-proliferation regime, and non-state actors becoming the major subjects to proliferate nuclear technology and nuclear materials. Since coming into office, Trump has thoroughly negated the policy proposition of a nuclear-free world advocated by Obama, insisting on building a powerful missile defense system, developing new forms of strategic weapons, producing low-yield nuclear warheads, and withdrawing from the Iranian nuclear agreement.Trump's policy adjustment has much weakened the nuclear taboo and the nuclear non-proliferation regime, and has initiated a new round in the race toward cutting edge nuclear weapons technology, thus undermining strategic stability among major powers, all highlighting historic limitations of the international nuclear order.

Method of Improving the Bacteriological Monitoring Quality in Water

Due to lack of quantitative standard reference material, bacteriological monitoring has the characteristics of strong professionality and heavy workload. It is necessary to conduct quality control in sampling preparation, sample collection technology, sample preservation and transportation, laboratory equipment, supply quality and monitoring personnel requirements in order to improve the quality of monitoring data and ensure the representativeness, accuracy, precision, comparability and integrity of the monitoring results.

Google and Sino-U.S. Relations

U.S. Secretary of State Hillary Clinton's speech against Internet censorship on January 21 raised contention with China over cyber policy, which flared after Google Inc. last week warned it could pull out

Economic Tools Widen International Space

It is of vital importance that we identify the nature of the profound changes in the international power configuration and big power relations. It is not enough to simplify the issue into a debate of whether the opportunities outweigh the challenges for China or whether the environment is beneficial or not. In short,

The Rise of the Far Right in Europe and the Refugee Crisis

The rise of the far right in Europe has captured the attention of the international community in recent years. Its specific features are: an unprecedentedly strong influence, an obvious trend towards the moderate line, horizontal collaboration to expand its reach, and a very adept use of social media networks. The refugee crisis has given the far right an historical opportunity. The rise has also had a profound effect on European politics; it has deepened the political divide inside EU member states, and shaken up the traditional political values and the foundation of the union.The rise of the far right will likely not change Europe's political landscape, but problems of EU governance over its handling of the refugee crisis cannot be ignored.

China-Japan Security Relations and China＇s Countermeasures

Security relations are crucial in China-Japan relations. Since the"nationalization"of the Diaoyu Islands by Japan in 2012, mutual trust between China and Japan has been declining, and bilateral security relations have reached a low point. China-Japan security relations are typified by ongoing dispute over the Diaoyu Islands, lack of mutual trust exacerbated by various actions by Japan, and the delay of China-Japan security dialogues. The evolution of China-Japan security relations derived from the Diaoyu Islands dispute is clearly beyond the scope of the dispute itself, with deep-rooted internal and external factors. In the near future,China-Japan security relations will face more challenges than opportunities. China should take measures, including enhancing mutual trust in politics and security between the two countries, to impose necessary pressure on Japan to change course, to win over neighboring countries so as to avoid pretext for Japan's intervention in regional issues,and to strengthen interpersonal communication and understanding between people of the two countries in order to stabilize security relations.

Preventing Terrorist Attacks on “Soft” Targets

Assaults on ＂soft＂ targets are increasing. Since terrorists choose location precisely because of the strong possibility of fatalities and injuries to a mass of unwitting people, counterterrorism strategists must diligently plan to prevent these intensive attacks. As compared to military guards and trained security forces, shoppers and hotel guests are more likely to be paralyzed with confusion in a comprehensive assault by a small group of individuals who have practiced coordinated moves for months. This essay probes the rationale behind the attacks and threatened attacks, and surveys prevention and countermeasures adopted in some countries.